What does the Alpha 01 fault code mean?

Your boiler is failing to light the burner, meaning it cannot provide you with any heating or hot water until the issue is resolved.

How much does it cost to fix Alpha error code 01?

Typical repair cost for the Alpha 01 fault is £120-250 including labour.

Check if you have credit on your gas meter or if other gas appliances in the house are working

Ignition failure - Flame not detected during ignition sequence

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Almost always a stuck diverter valve on combis.

Lockout fault with a reset-needed pattern.

Older boilers — thermocouple, draught, gas supply.